// This file is part of Substrate.

// Copyright (C) 2017-2021 Parity Technologies (UK) Ltd.
// SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.

use crate::{chain_spec, service, service::new_partial, Cli, Subcommand};
use node_executor::Executor;
use node_runtime::{Block, RuntimeApi};
use sc_cli::{ChainSpec, Result, Role, RuntimeVersion, SubstrateCli};
use sc_service::PartialComponents;

impl SubstrateCli for Cli {
    fn impl_name() -> String {
        "Substrate Node".into()
    }

    fn impl_version() -> String {
        env!("SUBSTRATE_CLI_IMPL_VERSION").into()
    }

    fn description() -> String {
        env!("CARGO_PKG_DESCRIPTION").into()
    }

    fn author() -> String {
        env!("CARGO_PKG_AUTHORS").into()
    }

    fn support_url() -> String {
        "https://github.com/paritytech/substrate/issues/new".into()
    }

    fn copyright_start_year() -> i32 {
        2017
    }

    fn load_spec(&self, id: &str) -> std::result::Result<Box<dyn sc_service::ChainSpec>, String> {
        let spec = match id {
            "" => return Err("Please specify which chain you want to run, e.g. --dev or --chain=local".into()),
            "dev" => Box::new(chain_spec::development_config()),
            "local" => Box::new(chain_spec::local_testnet_config()),
            "fir" | "flaming-fir" => Box::new(chain_spec::flaming_fir_config()?),
            "staging" => Box::new(chain_spec::staging_testnet_config()),
            path => Box::new(chain_spec::ChainSpec::from_json_file(std::path::PathBuf::from(path))?),
        };
        Ok(spec)
    }

    fn native_runtime_version(_: &Box<dyn ChainSpec>) -> &'static RuntimeVersion {
        &node_runtime::VERSION
    }
}

/// Parse command line arguments into service configuration.
pub fn run() -> Result<()> {
    let cli = Cli::from_args();

    match &cli.subcommand {
        None => {
            let runner = cli.create_runner(&cli.run)?;
            runner.run_node_until_exit(|config| async move {
                match config.role {
                    Role::Light => service::new_light(config),
                    _ => service::new_full(config),
                }
                .map_err(sc_cli::Error::Service)
            })
        },
        Some(Subcommand::Inspect(cmd)) => {
            let runner = cli.create_runner(cmd)?;

            runner.sync_run(|config| cmd.run::<Block, RuntimeApi, Executor>(config))
        },
        Some(Subcommand::Benchmark(cmd)) => {
            if cfg!(feature = "runtime-benchmarks") {
                let runner = cli.create_runner(cmd)?;

                runner.sync_run(|config| cmd.run::<Block, Executor>(config))
            } else {
                Err("Benchmarking wasn't enabled when building the node. \
				You can enable it with `--features runtime-benchmarks`."
                    .into())
            }
        },
        Some(Subcommand::Key(cmd)) => cmd.run(&cli),
        Some(Subcommand::Sign(cmd)) => cmd.run(),
        Some(Subcommand::Verify(cmd)) => cmd.run(),
        Some(Subcommand::Vanity(cmd)) => cmd.run(),
        Some(Subcommand::BuildSpec(cmd)) => {
            let runner = cli.create_runner(cmd)?;
            runner.sync_run(|config| cmd.run(config.chain_spec, config.network))
        },
        Some(Subcommand::CheckBlock(cmd)) => {
            let runner = cli.create_runner(cmd)?;
            runner.async_run(|config| {
                let PartialComponents { client, task_manager, import_queue, .. } = new_partial(&config)?;
                Ok((cmd.run(client, import_queue), task_manager))
            })
        },
        Some(Subcommand::ExportBlocks(cmd)) => {
            let runner = cli.create_runner(cmd)?;
            runner.async_run(|config| {
                let PartialComponents { client, task_manager, .. } = new_partial(&config)?;
                Ok((cmd.run(client, config.database), task_manager))
            })
        },
        Some(Subcommand::ExportState(cmd)) => {
            let runner = cli.create_runner(cmd)?;
            runner.async_run(|config| {
                let PartialComponents { client, task_manager, .. } = new_partial(&config)?;
                Ok((cmd.run(client, config.chain_spec), task_manager))
            })
        },
        Some(Subcommand::ImportBlocks(cmd)) => {
            let runner = cli.create_runner(cmd)?;
            runner.async_run(|config| {
                let PartialComponents { client, task_manager, import_queue, .. } = new_partial(&config)?;
                Ok((cmd.run(client, import_queue), task_manager))
            })
        },
        Some(Subcommand::PurgeChain(cmd)) => {
            let runner = cli.create_runner(cmd)?;
            runner.sync_run(|config| cmd.run(config.database))
        },
        Some(Subcommand::Revert(cmd)) => {
            let runner = cli.create_runner(cmd)?;
            runner.async_run(|config| {
                let PartialComponents { client, task_manager, backend, .. } = new_partial(&config)?;
                Ok((cmd.run(client, backend), task_manager))
            })
        },
    }
}
